JPS6119170Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper folding mechanism of a line printer device used as an output device of an electronic computer, and is capable of changing the folding force depending on the difficulty level of folding the paper.

FIG. 1 is a side view showing the outline of the internal structure of the line printer device. Inside the cover 1, there are a type drum 3 around which an ink ribbon 2 is wound, a hammer magnet 5 that operates a print hammer 4, and a paper feed. A mechanism section 7 consisting of a mechanism 6 is provided. Also,
A control circuit 8 is provided for operating these mechanical units in accordance with output information. Reference numeral 9 denotes a sheet on which information is printed, and is fed out by the paper feed mechanism 6 from a folded sheet 9a that is set in the hopper 10 in a folded state. Characters are printed on the fed paper 9 by a type drum 3 and a print hammer 4, and the printed portion is discharged to a stacker 11 and folded back to its original state.

In order to smoothly fold the stacker 11, a folding mechanism as shown in FIG. 2 has conventionally been used. That is, since the folded paper 9a in the hopper 10 is stretched straight at the fold line 9c at the printing section, a folding mechanism that bends the paper at the fold line as before is useful in order to fold it back to its original state. In this folding mechanism, a non-perfect round roller 12 is rotatably provided on a shaft 13, and a diaphragm 14 is disposed so as to be in pressure contact with the long diameter portion of the outer peripheral surface of the non-perfect circular roller 12. A vibrating film 15 is stacked and fixed on the vibrating plate 14. The vibrating film 15 hangs down from the vibrating plate 14, and the lower end portions 16 are bent into a U-shape to increase the weight and are fixed to each other. A set of two guide plates 17 sandwich the vibrating film 15.
a and 17b are arranged facing each other with an interval.
Then, the guide plates 17a and 17b and the diaphragm 1
The upper end of 4 is fixed to the device frame or the like. The paper 9 is dropped between the non-perfect circular roller 12 and the diaphragm 14 and descends. The diaphragm 14 has a spring property and is positioned so that it touches the long diameter part of the non-round roller 12 but not the short diameter part, so that the rotation of the non-round roller 12 in the direction of arrow _{a is} prevented. The diaphragm 14 vibrates, and the paper 9 is vibrated. Then, the fold line 9c of the paper is caused by vibration.
Can be bent in a direction that is easy to bend. In this way, the fold 9c descends in a state where it is bent to some extent, but when it comes between the guide plates 17a and 17b, it is slammed by the vibrating film 15. Therefore, the fold line 9c is further folded and wrinkled, making it easier to bend. In this way, the paper 9 descends while vibrating, thereby increasing its folds, and is folded onto the table 18 by its own weight. As the height h of the folding portion 9b gradually increases, the table 18 descends, and the guide plates 17a, 17
The distance H between the paper 9b and the folded paper 9b is always maintained constant.

By the way, the folding characteristics of the paper handled by printers are not constant, and the thickness and quality of the paper,
The degree of difficulty in folding differs depending on the degree of processing of the folding perforations, the presence or absence of intermediate horizontal perforations, the heat applied to the paper (in the case of a laser printer), etc. By using the folding mechanism shown in FIG. 2, even paper that is relatively difficult to fold can be folded with increased folding curl. However, when the folding mechanism is operated, static electricity is likely to be generated due to friction caused by noise and vibration, and countermeasures are required. Particularly in the case of non-impact printers, noise reduction is important.

Also, set continuous paper 9 first (preset).
When doing so, it is necessary to rotate the non-round roller 12 so that the short diameter part is on the side of the diaphragm 14, and insert the leading edge of the continuous paper 9 through the narrow gap between the two, which is a cumbersome operation. . In particular, by constantly pressing the diaphragm 14 against the outer peripheral surface of the non-round roller 12, the continuous paper 9 is held in between and pulled by frictional force.
If paper jams were to be prevented, it would be extremely difficult to set continuous paper. Jitsukō 1975−
As described in Publication No. 36428, even in the case of a structure in which continuous paper is passed between a non-perfect round roller and an impeller and the continuous paper is pulled by flexible blades, the relationship between the impeller and the non-perfect circular roller is Since there is not enough space, it is difficult to insert the leading edge of continuous paper.

Therefore, in this invention, the use of the folding mechanism is kept to the minimum necessary, and if the paper can be folded without using the folding mechanism, the folding mechanism is not activated, and the paper is set easily. The purpose is to In order to achieve this objective, the present invention has developed a device that vibrates creased continuous paper to make it easier to fold, fold it, and stack it. and the vibrating member that comes into contact with at least the long diameter portion thereof is made of an elastic plate material, and
By attaching it to the device via the attachment/detachment mechanism, the continuous paper is pressed against the non-round roller by the vibrating member.
They are pressed into contact with each other to allow passage between the non-round roller and the vibrating member. In addition, two guide members are vertically disposed below the non-round roller and face each other across the paper path, and are rotatably supported at the upper end of each guide member so that they can be opened and closed. and has an opening/closing mechanism for opening and closing the guide member.

In other words, by attaching the vibrating member that vibrates the paper to the device via an attachment/detachment mechanism, the vibrating member can be easily removed, and the upper ends of the guide plates arranged facing each other can be rotated around the shaft. Since the guide plate can be opened and closed around the support and shaft support, when handling easily foldable paper, the vibrating member is removed, the guide plate is rotated open, and the paper is evacuated from the paper path. Even when using a vibrating member, when setting continuous paper, remove the vibrating member from the device, set the continuous paper in the paper path, and then attach the vibrating member so that it can be pressed against the outer periphery of the non-round roller. do.

Next, an embodiment of the paper folding mechanism according to the present invention will be described. FIG. 3 is a side view of the internal mechanism showing the paper folding mechanism corresponding to FIG. 2.
The non-perfect round roller 12 is rotatably attached to the main body via a shaft 13 as in the conventional case. A vibrating member consisting of a vibrating film 15 and a vibrating plate 14' is detachably attached to an apparatus frame 19. That is, a U-shaped notch 20 is formed in the device frame 19, and mounting shafts 21 are provided on the left and right sides of the upper end of the diaphragm 14'. The left and right mounting shafts 21 are fitted into U-shaped notches 20 in the left and right device frames, and by removing the mounting shafts 21 from the U-shaped notches 20, the vibration member can be removed from the device. . FIG. 4 is a side view of this vibrating member mounting portion seen from the outside, with tongue pieces 22 protruding from both ends of the diaphragm 14', and the tongue pieces 22 being attached to a part of the device frame 19, such as an edge 19a.
By being engaged with the vibration plate 14', the diaphragm 14' is positioned so as to be in contact with the long diameter portion of the non-perfect circular roller 12, but not with the short diameter portion.

The guide members 17a' and 17b' both have a shaft 23 at the upper end.
It is rotatably attached to the left and right device frames via guide plates 17a' and 17b.
When b' is used for folding paper, as shown by the solid line, it should be placed parallel to each other as before, and when not in use, it should be placed around the mounting shafts 23a and 23b as shown by the chain line. Open the guide members 17a' and 17b' to prevent the paper from hitting them. In order to simultaneously open and close the two guide plates 17a' and 17b' with one touch, an opening/closing mechanism as shown in FIG. 5, for example, is effective. In this example, a guide member 17a' and a link 24a are fixed to the shaft 23a, and a guide member 17b' and a link 24b are fixed to the shaft 23b. A pin 26 at the tip of a lever 25 is inserted into a slit made at the intersection of both links 24a and 24b, and a handle 27 integrated with the lever 25 is operated in the direction of arrow _a to rotate the support shaft 28. When the pin 26 at the tip of the lever 25 is moved up and down in the direction of arrow _a3 , the links 24a and 24b are moved to the shaft 23.
The guide plates 17a', 17b' rotate about the shafts 23a, 23b to open and close.

As is clear from the illustrated embodiments above, the basic configuration of the present invention is that a vibrating member that vibrates in contact with the non-round roller 12 is removably attached to the device frame, etc. A pair of mutually opposing guide members 17a', 17b' are rotatably supported at their upper ends, and the guide members 17a', 17
b′ can be opened and closed.

Therefore, when handling paper that has weak creases and is difficult to fold, leave the vibrating member attached.
By also closing the guide member to bring it into a parallel state, the folding mechanism can be operated in the same manner as the conventional device shown in FIG. 2, thereby increasing the creases and ensuring reliable folding and stacking. In addition, the vibration generating part is 1
Since only one set of non-round rollers and one set of leaf spring-like vibrating members pressed against the outer periphery are required, this structure is different from the conventional structure using two sets of non-round rollers, impellers, etc. that rotate with each other. The configuration is much simpler. Even when a vibrating member must be used, when setting continuous paper, the vibrating member can be removed before setting the continuous paper, making the paper setting operation extremely simple. On the other hand, when handling paper that has excellent folding characteristics and can be folded without activating the folding mechanism, the vibration member is removed and the guide member 17
By opening a' and 17b' to allow the paper to escape from the paper path, the paper folding mechanism is not activated. As a result, problems such as the sound of hitting the paper and the dust generated by the hitting of the paper are eliminated, and static electricity caused by the friction of the paper is also significantly reduced. Note that when the vibrating member and the guide member are not used, only the non-round roller 12 may be operated, but in the case of paper for which the present invention is extremely easy, it is preferable to stop it.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the internal structure of a printer device, FIG. 2 is a side view showing the internal structure of a conventional paper folding mechanism, and FIG. 3 is a side view showing an example of the internal structure of the paper folding mechanism according to the present invention. FIG. 4 is an enlarged external side view showing the vibrating member attachment/detachment section of the same mechanism, and FIG. 5 is a side view showing a specific example of the guide member opening/closing mechanism. In the figure, 9 is paper, 9a and 9b are folding parts, 9c is a fold line, 11 is a paper stacker, and 12
14' is a non-round roller, 14' is a diaphragm, 15 is a vibrating film, 17a', 17b' are guide plates (guide members), 20 is a U-shaped notch, 21 is a mounting shaft, 2
3a and 23b are mounting shafts, and 24a and 24b are links.

Claims (1)

[Claim for Utility Model Registration] In a device that vibrates creased continuous paper to make it easier to fold, fold it, and stack it, a device that faces the outer circumferential surface of a rotatably supported non-round roller. , and the vibrating member that abuts at least the long diameter portion thereof is constituted by an elastic plate material, and is attached to the device via an attachment/detachment mechanism, so that the continuous paper is pressed and pressed against the non-round roller by the vibrating member. to allow passage between the non-perfect round roller and the vibrating member, and two guide members vertically disposed below the non-perfect round roller and facing each other across the paper path are operable to open and close. A paper folding mechanism characterized in that each guide member is rotatably supported on an upper end thereof, and has an opening/closing mechanism for opening and closing the guide members.